Rebutia einsteinii subs. aureiflora(Backeb.) Hjertson: Has large mostly yellow or orange flowers with white throat. It is very variable. Distribution: North-west Argentina near to the Salta – Jujuy border around Quebrada del Toro.

Rebutia einsteinii subs. gonjianii(R.Kiesling) Hjertson: has minuscule, thin finger-like stems branching from the base or higher in the manner of a miniature saguaro, from a thick, fleshy taproot. Spines pectinated less than 1 mm long. Distribution: Huacalera, Tilcara (Jujuy, Argentina).